On 26/11/2021 12:04, Srinivasa Rao Mandadapu wrote:
Add lpass cpu driver to support audio over codec dma for ADSP bypass usecase.
Signed-off-by: Srinivasa Rao Mandadapu srivasam@codeaurora.org Co-developed-by: Venkata Prasad Potturu potturu@codeaurora.org Signed-off-by: Venkata Prasad Potturu potturu@codeaurora.org
sound/soc/qcom/lpass-cdc-dma.c | 275 +++++++++++++++++++++++++++++++++++++++++ sound/soc/qcom/lpass.h | 1 + 2 files changed, 276 insertions(+) create mode 100644 sound/soc/qcom/lpass-cdc-dma.c
diff --git a/sound/soc/qcom/lpass-cdc-dma.c b/sound/soc/qcom/lpass-cdc-dma.c new file mode 100644 index 0000000..4462178 --- /dev/null +++ b/sound/soc/qcom/lpass-cdc-dma.c @@ -0,0 +1,275 @@ +// SPDX-License-Identifier: GPL-2.0-only +/*
- Copyright (c) 2021 The Linux Foundation. All rights reserved.
- lpass-cdc-dma.c -- ALSA SoC WCD -CPU DAI driver for QTi LPASS WCD
Can we remove WCD from this comment?
- */
+#include <linux/clk.h> +#include <linux/module.h> +#include <sound/soc.h> +#include <sound/soc-dai.h>
+#include "lpass-lpaif-reg.h" +#include "lpass.h"
+enum codec_dma_interfaces {
- LPASS_CDC_DMA_INTERFACE1 = 1,
- LPASS_CDC_DMA_INTERFACE2,
- LPASS_CDC_DMA_INTERFACE3,
- LPASS_CDC_DMA_INTERFACE4,
- LPASS_CDC_DMA_INTERFACE5,
- LPASS_CDC_DMA_INTERFACE6,
- LPASS_CDC_DMA_INTERFACE7,
- LPASS_CDC_DMA_INTERFACE8,
- LPASS_CDC_DMA_INTERFACE9,
- LPASS_CDC_DMA_INTERFACE10,
+};
+static void __lpass_get_dmactl_handle(struct snd_pcm_substream *substream, struct snd_soc_dai *dai,
struct lpaif_dmactl **dmactl, int *id)+{
- struct snd_soc_pcm_runtime *soc_runtime = asoc_substream_to_rtd(substream);
- struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(soc_runtime, 0);
- struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
- struct snd_pcm_runtime *rt = substream->runtime;
- struct lpass_pcm_data *pcm_data = rt->private_data;
- struct lpass_variant *v = drvdata->variant;
- unsigned int dai_id = cpu_dai->driver->id;
- switch (dai_id) {
- case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
*dmactl = drvdata->rxtx_rd_dmactl;*id = pcm_data->dma_ch;break;- case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
*dmactl = drvdata->rxtx_wr_dmactl;*id = pcm_data->dma_ch - v->rxtx_wrdma_channel_start;break;- case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
*dmactl = drvdata->va_wr_dmactl;*id = pcm_data->dma_ch - v->va_wrdma_channel_start;break;- default:
dev_err(soc_runtime->dev, "invalid dai id for dma ctl: %d\n", dai_id);break;- }
+}
looks much better now,
+static int __lpass_get_codec_dma_intf_type(int dai_id) +{
- int ret;
- switch (dai_id) {
- case LPASS_CDC_DMA_RX0:
- case LPASS_CDC_DMA_TX0:
- case LPASS_CDC_DMA_VA_TX0:
ret = LPASS_CDC_DMA_INTERFACE1;break;- case LPASS_CDC_DMA_RX1:
- case LPASS_CDC_DMA_TX1:
- case LPASS_CDC_DMA_VA_TX1:
ret = LPASS_CDC_DMA_INTERFACE2;break;- case LPASS_CDC_DMA_RX2:
- case LPASS_CDC_DMA_TX2:
- case LPASS_CDC_DMA_VA_TX2:
ret = LPASS_CDC_DMA_INTERFACE3;break;- case LPASS_CDC_DMA_RX3:
- case LPASS_CDC_DMA_TX3:
- case LPASS_CDC_DMA_VA_TX3:
ret = LPASS_CDC_DMA_INTERFACE4;break;- case LPASS_CDC_DMA_RX4:
- case LPASS_CDC_DMA_TX4:
- case LPASS_CDC_DMA_VA_TX4:
ret = LPASS_CDC_DMA_INTERFACE5;break;- case LPASS_CDC_DMA_RX5:
- case LPASS_CDC_DMA_TX5:
- case LPASS_CDC_DMA_VA_TX5:
ret = LPASS_CDC_DMA_INTERFACE6;break;- case LPASS_CDC_DMA_RX6:
- case LPASS_CDC_DMA_TX6:
- case LPASS_CDC_DMA_VA_TX6:
ret = LPASS_CDC_DMA_INTERFACE7;break;- case LPASS_CDC_DMA_RX7:
- case LPASS_CDC_DMA_TX7:
- case LPASS_CDC_DMA_VA_TX7:
ret = LPASS_CDC_DMA_INTERFACE8;break;- case LPASS_CDC_DMA_RX8:
- case LPASS_CDC_DMA_TX8:
- case LPASS_CDC_DMA_VA_TX8:
ret = LPASS_CDC_DMA_INTERFACE9;break;- case LPASS_CDC_DMA_RX9:
ret = LPASS_CDC_DMA_INTERFACE10;break;- default:
ret = -EINVAL;break;- }
- return ret;
+}
+static int __lpass_platform_codec_intf_init(struct snd_soc_dai *dai,
struct snd_pcm_substream *substream)+{
- struct snd_soc_pcm_runtime *soc_runtime = asoc_substream_to_rtd(substream);
- struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(soc_runtime, 0);
- struct lpaif_dmactl *dmactl = NULL;
- struct device *dev = soc_runtime->dev;
- int ret, id, codec_intf;
- unsigned int dai_id = cpu_dai->driver->id;
- codec_intf = __lpass_get_codec_dma_intf_type(dai_id);
- if (codec_intf < 0) {
dev_err(dev, "failed to get codec_intf: %d\n", codec_intf);return codec_intf;- }
- __lpass_get_dmactl_handle(substream, dai, &dmactl, &id);
- if (!dmactl) {
dev_err(dev, "failed to get dmactl handle for dai_id: %d\n", dai_id);return -EINVAL;- }
- ret = regmap_fields_write(dmactl->codec_intf, id, codec_intf);
- if (ret) {
dev_err(dev, "error writing to dmactl codec_intf reg field: %d\n", ret);return ret;- }
- ret = regmap_fields_write(dmactl->codec_fs_sel, id, 0x0);
- if (ret) {
dev_err(dev, "error writing to dmactl codec_fs_sel reg field: %d\n", ret);return ret;- }
- ret = regmap_fields_write(dmactl->codec_fs_delay, id, 0x0);
- if (ret) {
dev_err(dev, "error writing to dmactl codec_fs_delay reg field: %d\n", ret);return ret;- }
- ret = regmap_fields_write(dmactl->codec_pack, id, 0x1);
- if (ret) {
dev_err(dev, "error writing to dmactl codec_pack reg field: %d\n", ret);return ret;- }
- ret = regmap_fields_write(dmactl->codec_enable, id, LPAIF_DMACTL_ENABLE_ON);
- if (ret) {
dev_err(dev, "error writing to dmactl codec_enable reg field: %d\n", ret);return ret;- }
- return 0;
+}
+static int lpass_wcd_daiops_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)+{
- struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
- return clk_bulk_prepare_enable(drvdata->cdc_num_clks, drvdata->cdc_clks);
+}
+static void lpass_wcd_daiops_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)+{
- struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
- clk_bulk_disable_unprepare(drvdata->cdc_num_clks, drvdata->cdc_clks);
+}
+static int lpass_wcd_daiops_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,struct snd_soc_dai *dai)+{
- struct snd_soc_pcm_runtime *soc_runtime = asoc_substream_to_rtd(substream);
- struct lpaif_dmactl *dmactl = NULL;
- unsigned int ret, regval;
- unsigned int channels = params_channels(params);
- int id;
- switch (channels) {
- case 1:
regval = LPASS_CDC_DMA_INTF_ONE_CHANNEL;break;- case 2:
regval = LPASS_CDC_DMA_INTF_TWO_CHANNEL;break;- case 4:
regval = LPASS_CDC_DMA_INTF_FOUR_CHANNEL;break;- case 6:
regval = LPASS_CDC_DMA_INTF_SIX_CHANNEL;break;- case 8:
regval = LPASS_CDC_DMA_INTF_EIGHT_CHANNEL;break;- default:
dev_err(soc_runtime->dev, "invalid PCM config\n");return -EINVAL;- }
- __lpass_get_dmactl_handle(substream, dai, &dmactl, &id);
- if (!dmactl) {
dev_err(soc_runtime->dev, "failed to get dmactl handle\n");return -EINVAL;- }
- ret = regmap_fields_write(dmactl->codec_channel, id, regval);
- if (ret) {
dev_err(soc_runtime->dev,"error writing to dmactl codec_channel reg field: %d\n", ret);return ret;- }
- return 0;
+}
+static int lpass_wcd_daiops_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)+{
- struct snd_soc_pcm_runtime *soc_runtime = asoc_substream_to_rtd(substream);
- struct lpaif_dmactl *dmactl;
- int ret = 0, id;
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
- case SNDRV_PCM_TRIGGER_RESUME:
- case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
__lpass_platform_codec_intf_init(dai, substream);break;- case SNDRV_PCM_TRIGGER_STOP:
- case SNDRV_PCM_TRIGGER_SUSPEND:
- case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
__lpass_get_dmactl_handle(substream, dai, &dmactl, &id);if (!dmactl) {dev_err(soc_runtime->dev, "failed to get dmactl handle\n");return -EINVAL;}ret = regmap_fields_write(dmactl->codec_enable, id, LPAIF_DMACTL_ENABLE_OFF);if (ret) {dev_err(soc_runtime->dev,"error writing to dmactl codec_enable reg: %d\n", ret);return ret;}break;- default:
ret = -EINVAL;dev_err(soc_runtime->dev, "%s: invalid %d interface\n", __func__, cmd);break;- }
- return ret;
+}
+const struct snd_soc_dai_ops asoc_qcom_lpass_wcd_dai_ops = {
- .startup = lpass_wcd_daiops_startup,
- .shutdown = lpass_wcd_daiops_shutdown,
- .hw_params = lpass_wcd_daiops_hw_params,
- .trigger = lpass_wcd_daiops_trigger,
+}; +EXPORT_SYMBOL_GPL(asoc_qcom_lpass_wcd_dai_ops);
can we remove the reference to wcd here, this is bascially codec dma driver and nothing to do with wcd. lets rename lpass_wcd_* to lpass_cdc_dma_* or somthing like that.
--srini
+MODULE_DESCRIPTION("QTi LPASS CDC DMA Driver"); +MODULE_LICENSE("GPL"); diff --git a/sound/soc/qcom/lpass.h b/sound/soc/qcom/lpass.h index 4142f12..48602c1 100644 --- a/sound/soc/qcom/lpass.h +++ b/sound/soc/qcom/lpass.h @@ -403,5 +403,6 @@ int asoc_qcom_lpass_cpu_dai_probe(struct snd_soc_dai *dai); extern const struct snd_soc_dai_ops asoc_qcom_lpass_cpu_dai_ops; int lpass_cpu_pcm_new(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai); +extern const struct snd_soc_dai_ops asoc_qcom_lpass_wcd_dai_ops;
#endif /* __LPASS_H__ */